55727727 has 16 divisors (see below), whose sum is σ = 81702912. Its totient is φ = 33505920.

The previous prime is 55727681. The next prime is 55727729. The reversal of 55727727 is 72772755.

It is not a de Polignac number, because 55727727 - 2⁶ = 55727663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55727729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2458 + ... + 10839.

It is an arithmetic number, because the mean of its divisors is an integer number (5106432).

Almost surely, 2^55727727 is an apocalyptic number.

55727727 is a deficient number, since it is larger than the sum of its proper divisors (25975185).

55727727 is a wasteful number, since it uses less digits than its factorization.

55727727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13438.

The product of its digits is 240100, while the sum is 42.

The square root of 55727727 is about 7465.1006021352. The cubic root of 55727727 is about 381.9651819000.

The spelling of 55727727 in words is "fifty-five million, seven hundred twenty-seven thousand, seven hundred twenty-seven".